一种灯罩注塑模具设计 摘要:近代塑料工业的快速发展，让塑料被广泛应用。本课题延续了设计注塑模具的一般流程，意在设计生产灯罩的注塑模具。设计模具之前，应先对所选材料的成形特性有所掌握，在确定制品的生产要求后，可直接对制品进行工艺性分析和成型零部件的设计运算。其次，可参考制品的形状尺寸和精度要求来选定模具结构，再对注塑机的型号进行选择。最后，对所选用的成型设备以及各种计算数据进行校核，保证设计的安全性和合理性。通过本课题的研究，不仅对专业课知识有充分的检验，而且锻炼了自己勤动手、多思考和知识整合的能力。总之，设计灯罩注塑模具，其根本问题就是设计凹模和凸模、导向机构、侧向分型与抽芯机构、排气、加热和冷却系统、注塑机的选择等环节。 关键词：箱体外壳；模具结构；注塑模设计 Desig
n of I
njectio
n Mold for Meter Box Abstract: The rapid developme
nt of moder
n plastics i
ndustry, so that plastics arewidely used. This topic co
nti
nues the desig
n of the ge
neral process of i
njectio
n mold, i
nte
nded to desig
n a
nd produce the meter box of i
njectio
n mold. Before desig
ni
ng the mold,you should first u
ndersta
nd the formi
ng characteristics of the selected materials. After determi
ni
ng the productio
n requireme
nts of the products, it ca
n be directly o
n the process of product a
nalysis a
nd the desig
n calculatio
n of moldi
ng parts. Seco
nd, the mold structure ca
n be selected by refere
nce to the shape a
nd size of products a
nd accuracy requireme
nts, a
nd the
n choose the type of i
njectio
n moldi
ng machi
ne. Fi
nally, the selected moldi
ng equipme
nt a
nd avariety of calculatio
n data to check, so as to e
nsure the safety a
nd ratio
nality of the desig
n. Through the study of this subject,
not o
nly ca
n check the professio
nal k
nowledge, but also exercise ma
nual ability, more thi
nki
ng a
nd k
nowledge i
ntegratio
n ability. All i
n all, the fu
ndame
ntal problem of the desig
n of the meter box shell i
njectio
n mold is that the desig
n of cavity a
nd core, guida
nce mecha
nism, lateral classificatio
n a
nd core pulli
ng mecha
nism, exhaust, heati
ng a
nd cooli
ng systems, selectio
n of i
njectio
n moldi
ng machi
ne a
nd other li
nks. Keywords：Box shell，Mold structure，I
njectio
n mold desig
n 目录 摘要I Abstract II 1绪论3 1.1研究的背景及意义3 1.2国内外模具发展现状3 1.2.1国内注塑模具的发展现状3 1.2.2国外注塑模具的发展现状3 1.3注塑模具的发展趋势4 1.4研究的内容4 2塑件结构工艺性分析5 2.1塑件的几何形状分析5 2.1.1塑件结构分析5 2.1.2尺寸精度分析5 2.1.3生产批量6 2.2塑件材料的成型特性6 2.2.1塑件材料的选择6 2.2.2性能简述6 2.3成型设备的要求7 2.4性能指标7 3注塑机和成型方案的确定8 3.1塑件的参数计算8 3.1.1分析塑件的表面质量8 3.1.2体积和重量的确定8 3.2注塑机的确定8 3.3拟定成型方案9 3.3.1成型设备9 3.3.2主要特点10 3.3.3注射工艺参数10 3.3.4成型流程11 4型腔数目的确定和分型面的筛选12 4.1确定型腔数12 4.2筛选分型面12 4.2.1分型面的筛选原则12 4.3型腔的布置方式13 5成型零部件的设计14 5.1凸模的设计14 5.2凹模的设计14 5.3成型零件工作尺寸的计算14 5.3.1模腔工作尺寸的计算14 5.3.2型腔壁厚和底板厚度计算16 6浇注系统的设计17 6.1浇注系统设计原则17 6.2主流道的设计17 6.3分流道的设计17 6.3.1分流道的截面形状18 6.3.2分流道的尺寸18 6.4浇口的设计18 6.4.1浇口的主要作用18 6.4.2浇口的类型与位置18 7排气和冷却系统设计19 7.1冷却系统设计的规则19 7.2排气系统设计19 8注射机和模具各参数的校核20 8.1工艺参数的校核20 8.2模具装配尺寸的校核21 8.2.1喷嘴的校核21 8.2.2定位圈尺寸的校核21 8.2.3模具外形尺寸的校核21 8.2.4模具厚度的校核21 8.3开模行程的校核22 9总结23 参考文献24 致谢26 附录26